How the trade-in tax credit works in your state

The short version

In most states, when you trade in a car at the dealership, you pay sales tax only on the price minus the trade-in. That makes the tax saving easy to estimate: trade-in value × your tax rate. A $10,000 trade-in at an 8% rate saves $800 in tax.

A few states give no credit at all. California is the big one: you pay tax on the full price even when you trade a car in. Virginia doesn't deduct trade-ins either.

The examples below all use the same deal: a $30,000 used car from a dealer with a $10,000 trade-in. Each link opens that deal in the calculator with the state's rule already applied.

Texas (Houston, Dallas, San Antonio): full credit

Texas charges a flat 6.25% motor vehicle sales tax statewide, and the Comptroller says the purchaser "can deduct the value of the traded vehicle from the selling price." Tax is on $20,000: $1,250 instead of $1,875, a $625 saving. The trade-in has to go to the seller in the same transaction. Open the Houston example.

California (Los Angeles, San Diego, Bay Area): no credit

California's tax agency (CDTFA) tells dealers they "cannot deduct the allowance for the trade-in": tax is charged on the full selling price. At the City of Los Angeles rate of 10.25%, that's $3,075 whether or not you trade in. Your trade-in still lowers the amount you finance, but it saves nothing on tax. Open the Los Angeles example.

That changes the math on selling privately. In California, if a private buyer would pay you more than the dealer's trade-in offer, there's no tax credit to make up the gap.

Florida (Miami, Tampa, Orlando): full credit, and the local surtax is capped

Florida taxes the price after the trade-in at 6%, plus your county's discretionary surtax, which applies only to the first $5,000. In Miami-Dade (1% surtax) that's 6% of $20,000 plus 1% of $5,000: $1,250 instead of $1,850, saving $600. Because the surtax is capped, most of the saving comes from the 6% state rate. Open the Miami example.

Arizona (Phoenix, Tucson): full credit

Arizona law excludes "the value of merchandise traded in on the purchase of new merchandise" from the state tax base, and the Model City Tax Code excludes trade-in allowances from city tax too. Phoenix's combined rate is 9.1% (5.6% state, 0.7% Maricopa County, 2.8% city), but the city rate drops to 2.0% on the part of a single item's price over $14,338. Tax on $20,000 is about $1,775 instead of about $2,605, saving about $830. Open the Phoenix example.

Georgia (Atlanta): credit against the title tax

Georgia doesn't charge sales tax on cars. Instead you pay a one-time title ad valorem tax (TAVT) of 7% when you title the car. The Georgia Department of Revenue says "a reduction is made for the trade-in when the sale was made by a dealer," but not on a private sale.

One catch: for a used car, TAVT is based on the state's assessed value, not your price. If that value is close to $30,000, TAVT is about $1,400 instead of $2,100, saving about $700. LotGauge estimates TAVT on the sale price, so treat it as a close estimate. Open the Atlanta example.

Illinois (Chicago): full credit, no cap anymore

Illinois excludes the value of a like-kind trade-in from the taxable selling price. From 2020 through 2021 the credit was capped at $10,000 for most cars, but that cap ended January 1, 2022, so the full trade-in counts again. Chicago-area rates depend on the dealer's location and aren't calculated automatically yet, so this example uses an illustrative 10% rate: $2,000 instead of $3,000, saving $1,000. Open the example and replace 10% with your rate.

Colorado (Denver): full credit from a licensed dealer

Colorado's Department of Revenue says "the fair market value of the trade-in is excluded from the taxable purchase price" for state tax. Denver, which collects its own city tax, also taxes only the net price after a licensed dealer's trade-in allowance. Self-collecting cities set their own rules, so check yours. Colorado rates depend on where you live and register the car, and they aren't calculated automatically yet. At an illustrative 9% combined rate, tax is $1,800 instead of $2,700, saving $900. Open the example and enter your rate.

Utah (Salt Lake City, Provo): full credit with the selling dealer

Utah excludes a trade-in when the trade and the purchase are one transaction between the same two parties, which is the normal dealer trade-in. At Salt Lake City's 8.45% combined rate, tax on $20,000 is $1,690 instead of $2,535, saving $845. Open the Salt Lake City example.

The rules that apply almost everywhere

Same deal, same dealer. The credit applies when the dealer takes your car as part of the purchase. Selling your old car privately and then buying from a dealer gets no credit.

Value, not equity. The credit is based on the trade-in's value. If you owe $12,000 on a car the dealer values at $10,000, you still get the $10,000 credit, but the $2,000 you're underwater gets added to the new loan. Our trade-in equity guide shows what that does to the payment.

Private-party purchases. Buying from a private seller usually means paying tax at registration on the price or the vehicle's book value, with no trade-in credit.

Trade in or sell privately?

Private buyers often pay more than a dealer's trade-in offer. In a state with a trade-in credit, the tax saving narrows that gap. In Phoenix, a $10,000 trade-in offer on a $30,000 car saves about $830 in tax, so a private sale has to bring more than about $10,830 to come out ahead, before counting the time, listing costs and risk of selling it yourself. In California, any private-sale premium is pure gain.

How LotGauge handles it

With automatic tax on, the car payment calculator applies your state's trade-in rule and its official ZIP rate where we have one. In manual mode you enter the rate and choose whether tax applies to the price minus the trade-in. For the bigger picture on where your rate comes from, see how sales tax works on a used car.

Sources

Texas Comptroller, Motor Vehicle Tax Guide: trade-ins. CDTFA, Tax Guide for Motor Vehicle Dealers and city and county rates (Oct 1, 2026). Florida DOR, GT-800030, Sales and Use Tax on Motor Vehicles, and Florida Statutes 212.054. Arizona DOR, TPR 03-7 (citing A.R.S. § 42-5001), Model City Tax Code trade-in exclusion and TPT rate table; City of Phoenix, Combined Tax Rate Chart (January 2026). Georgia DOR, TAVT FAQ. Illinois Administrative Code, 86 Ill. Adm. Code 130.425. Colorado DOR, Sales & Use Tax Topics: Motor Vehicle Sales; City and County of Denver, Tax Guide Topic 5: Automotive Vehicles. Utah State Tax Commission, Publication 5. Virginia DMV, Motor Vehicle Sales and Use Tax. Checked October 2026. Tax figures are examples for a typical dealer purchase, not tax advice; confirm the exact amount on your purchase contract.